H. P. Grice, "Izzing, hazzing, and the per-essentiam/per-accidentem distinction"

izzing/hazzing – per-essentiam/per-accidentem

Literally, “by, as, or being an accident or non-essential feature.” 

A “per accidens” predication Grice calls a hazzing (not an izzing)

and is one in which an accident is predicated of a substance. 

The terminology is medieval. Note that the accident and substance

themselves, and not expressions standing for them, are the terms of

the predication relation. 

An “ens per accidentem” is either an accident or the “accidental 

unity” of a substance and an accident. 

Descartes, e.g., insists that a person is not a “per accidentem” union

of body and mind. 

Refs.: H. P. Grice, “Izzing, hazzing: the per-essentiam/per

accidentem distinction.”